rev·o·lu·tion (r?v??-lo?o?sh?n)n.1. a. Orbital motion about a point, especially as distinguished from axial rotation: the planetary revolution about the sun.b. A turning or rotational motion about an axis.c. A single complete cycle of such orbital or axial motion.2. The overthrow of one government and its replacement with another.3. A sudden or momentous change in a situation: the revolution in computer technology.4. Geology A time of major crustal deformation, when folds and faults are formed.[Middle English revolucioun, from Old French revolution, from Late Latin revol?ti?, revol?ti?n-, from Latin revol?tus, past participle of revolvere, to turn over; see revolve.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.revolution (?r?v??lu???n) n1. (Government, Politics & Diplomacy) the overthrow or repudiation of a regime or political system by the governed2. (Government, Politics & Diplomacy) (in Marxist theory) the violent and historically necessary transition from one system of production in a society to the next, as from feudalism to capitalism3. a far-reaching and drastic change, esp in ideas, methods, etc4. a. movement in or as if in a circleb. one complete turn in such a circle: a turntable rotating at 33 revolutions per minute. 5. (Astronomy) a. the orbital motion of one body, such as a planet or satellite, around another. Compare rotation5ab. one complete turn in such motion6. a cycle of successive events or changes7. (Geological Science) geology obsolete a profound change in conditions over a large part of the earth’s surface, esp one characterized by mountain building: an orogenic revolution. [C14: via Old French from Late Latin revol?ti?, from Latin revolvere to revolve]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014rev?o?lu?tion (?r?v ??lu ??n) n. 1. a complete and forcible overthrow and replacement of an established government or political system by the people governed. 2. a sudden, complete, or radical change in something: a revolution in church architecture; a social revolution caused by automation. 3. a. a procedure or course, as if in a circuit, back to a starting point. b. a single turn of this kind. 4. a. a turning round or rotating, as on an axis. b. a moving in a circular or curving course, as about a central point. c. a single cycle in such a course. 5. a. the orbiting of one heavenly body around another. b. (not in technical use) the rotation of a heavenly body on its axis. c. a single course of such movement. 6. a cycle of events in time or in a recurring period of time. [1350?1400; Middle English revolucion